Abstract
We have characterized two stable transformed mouse cell lines (CG1 and CTG1) that express either the normal vesicular stomatitis virus glycoprotein (G) or a truncated form of the G protein (TG) that lacks the COOH-terminal anchor sequences and is secreted from the cells. These cell lines were obtained using a hybrid vector consisting of the transforming DNA fragment of bovine papilloma virus linked to a segment of the SV40 expression vector pSV2 containing cloned cDNA encoding either the normal or truncated form of the vesicular stomatitis virus G protein. Using indirect immunofluorescence we have found that greater than 95% of the cells in each line express the G protein(s), although the level of expression within the population is variable. The normal G protein expressed in these cells obtains its complex oligosaccharides in less than 30 min and is transported to the cell surface. In contrast, the TG protein obtains its complex oligosaccharides with a half-time of about 2.5 h. Immunofluorescence data show an apparent concentration of the TG protein in the rough endoplasmic reticulum. These data together suggest that transfer of this anchorless protein from the rough endoplasmic reticulum to the Golgi apparatus is the rate- limiting step in its secretion. We observed, in addition to normal G protein, two smaller G-related proteins produced in the CG1 cell line. We suggest that these proteins could result from aberrant splicing from sites within the G mRNA sequence to the downstream acceptor in the pSV2 vector.
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- Bergmann J. E., Tokuyasu K. T., Singer S. J. Passage of an integral membrane protein, the vesicular stomatitis virus glycoprotein, through the Golgi apparatus en route to the plasma membrane. Proc Natl Acad Sci U S A. 1981 Mar;78(3):1746–1750. doi: 10.1073/pnas.78.3.1746. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chatis P. A., Morrison T. G. Vesicular stomatitis virus glycoprotein is anchored to intracellular membranes near its carboxyl end and is proteolytically cleaved at its amino terminus. J Virol. 1979 Mar;29(3):957–963. doi: 10.1128/jvi.29.3.957-963.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gluzman Y. SV40-transformed simian cells support the replication of early SV40 mutants. Cell. 1981 Jan;23(1):175–182. doi: 10.1016/0092-8674(81)90282-8. [DOI] [PubMed] [Google Scholar]
- Hirt B. Selective extraction of polyoma DNA from infected mouse cell cultures. J Mol Biol. 1967 Jun 14;26(2):365–369. doi: 10.1016/0022-2836(67)90307-5. [DOI] [PubMed] [Google Scholar]
- Hubbard S. C., Ivatt R. J. Synthesis and processing of asparagine-linked oligosaccharides. Annu Rev Biochem. 1981;50:555–583. doi: 10.1146/annurev.bi.50.070181.003011. [DOI] [PubMed] [Google Scholar]
- Irving R. A., Toneguzzo F., Rhee S. H., Hofmann T., Ghosh H. P. Synthesis and assembly of membrane glycoproteins: presence of leader peptide in nonglycosylated precursor of membrane glycoprotein of vesicular stomatitis virus. Proc Natl Acad Sci U S A. 1979 Feb;76(2):570–574. doi: 10.1073/pnas.76.2.570. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Katz F. N., Rothman J. E., Lingappa V. R., Blobel G., Lodish H. F. Membrane assembly in vitro: synthesis, glycosylation, and asymmetric insertion of a transmembrane protein. Proc Natl Acad Sci U S A. 1977 Aug;74(8):3278–3282. doi: 10.1073/pnas.74.8.3278. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knipe D., Rose J. K., Lodish H. F. Translation of individual species of vesicular stomatitis viral mRNA. J Virol. 1975 Apr;15(4):1004–1011. doi: 10.1128/jvi.15.4.1004-1011.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Law M. F., Lowy D. R., Dvoretzky I., Howley P. M. Mouse cells transformed by bovine papillomavirus contain only extrachromosomal viral DNA sequences. Proc Natl Acad Sci U S A. 1981 May;78(5):2727–2731. doi: 10.1073/pnas.78.5.2727. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lowy D. R., Dvoretzky I., Shober R., Law M. F., Engel L., Howley P. M. In vitro tumorigenic transformation by a defined sub-genomic fragment of bovine papilloma virus DNA. Nature. 1980 Sep 4;287(5777):72–74. doi: 10.1038/287072a0. [DOI] [PubMed] [Google Scholar]
- Mulligan R. C., Berg P. Expression of a bacterial gene in mammalian cells. Science. 1980 Sep 19;209(4463):1422–1427. doi: 10.1126/science.6251549. [DOI] [PubMed] [Google Scholar]
- Reading C. L., Penhoet E. E., Ballou C. E. Carbohydrate structure of vesicular stomatitis virus glycoprotein. J Biol Chem. 1978 Aug 25;253(16):5600–5612. [PubMed] [Google Scholar]
- Rose J. K., Bergmann J. E. Expression from cloned cDNA of cell-surface secreted forms of the glycoprotein of vesicular stomatitis virus in eucaryotic cells. Cell. 1982 Oct;30(3):753–762. doi: 10.1016/0092-8674(82)90280-x. [DOI] [PubMed] [Google Scholar]
- Rose J. K., Gallione C. J. Nucleotide sequences of the mRNA's encoding the vesicular stomatitis virus G and M proteins determined from cDNA clones containing the complete coding regions. J Virol. 1981 Aug;39(2):519–528. doi: 10.1128/jvi.39.2.519-528.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rose J. K. Nucleotide sequences of ribosome recgonition sites in messenger RNAs of vesicular stomatitis virus. Proc Natl Acad Sci U S A. 1977 Sep;74(9):3672–3676. doi: 10.1073/pnas.74.9.3672. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rose J. K., Welch W. J., Sefton B. M., Esch F. S., Ling N. C. Vesicular stomatitis virus glycoprotein is anchored in the viral membrane by a hydrophobic domain near the COOH terminus. Proc Natl Acad Sci U S A. 1980 Jul;77(7):3884–3888. doi: 10.1073/pnas.77.7.3884. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rothman J. E., Lodish H. F. Synchronised transmembrane insertion and glycosylation of a nascent membrane protein. Nature. 1977 Oct 27;269(5631):775–780. doi: 10.1038/269775a0. [DOI] [PubMed] [Google Scholar]
- Sarver N., Gruss P., Law M. F., Khoury G., Howley P. M. Bovine papilloma virus deoxyribonucleic acid: a novel eucaryotic cloning vector. Mol Cell Biol. 1981 Jun;1(6):486–496. doi: 10.1128/mcb.1.6.486. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sharp P. A. Speculations on RNA splicing. Cell. 1981 Mar;23(3):643–646. doi: 10.1016/0092-8674(81)90425-6. [DOI] [PubMed] [Google Scholar]
- Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
- Sprague J., Condra J. H., Arnheiter H., Lazzarini R. A. Expression of a recombinant DNA gene coding for the vesicular stomatitis virus nucleocapsid protein. J Virol. 1983 Feb;45(2):773–781. doi: 10.1128/jvi.45.2.773-781.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tarentino A. L., Maley F. Purification and properties of an endo-beta-N-acetylglucosaminidase from Streptomyces griseus. J Biol Chem. 1974 Feb 10;249(3):811–817. [PubMed] [Google Scholar]
- Toneguzzo F., Ghosh H. P. In vitro synthesis of vesicular stomatitis virus membrane glycoprotein and insertion into membranes. Proc Natl Acad Sci U S A. 1978 Feb;75(2):715–719. doi: 10.1073/pnas.75.2.715. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wigler M., Pellicer A., Silverstein S., Axel R., Urlaub G., Chasin L. DNA-mediated transfer of the adenine phosphoribosyltransferase locus into mammalian cells. Proc Natl Acad Sci U S A. 1979 Mar;76(3):1373–1376. doi: 10.1073/pnas.76.3.1373. [DOI] [PMC free article] [PubMed] [Google Scholar]